Memoir '44
What do I need to play Pacific Theater: which board, and is the Terrain Pack or a second base game required?
One base game plus Pacific Theater covers its seven standard scenarios, played on the base-game board (either side); the expansion adds terrain tiles that turn the countryside board into a beach-style map. No Terrain Pack or second base game is needed. The exception is the Overlord scenario Peleliu Landings, which needs two standard double-beach boards and more figures.